Wheel attachment for drag-scrapers.



' s. BLODGETT.

WHEEL ATTACHMENT FOR DRAG SGRAPEBS.

APPLICATION FILED MAR. 23, 1912.

PELtBIItBd. NOV. 26, 1912.

SAMUEL BLODGETT, OF (ELEMENTS, CALIFORNIA.

WHEEL ATTACHMENT FOR DBAG-SGRAPERS.

mea er.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed March 23, 1912. Serial no. 685,680.

To (all whom it may concern."

Be it known that I, SAMUEL Bnooonrr,

a citizen of the United States, residing at Clements, in the county ofSan Joaquin, State of California, have invented certain new and usefulImprovements in Nheel Attachments for Drag-Scrapers; and I do declarethe following to be a full, clear, and exactdescription of the same,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the characters of reference marked thereon, which form a part ofthis application.

This invention relates to improvements in scrapers and particularly todrag scrapers, the object of the invention being to produce a wheelattachment for drag scrapers which can be readily and quickly attachedto drag scrapers to convert/them into wheel scrapers without impairingthe working of the scraper as a drag scraper when the wheel attachmentis taken off.

A further object of the invention is to produce a simple and ready meansfor raising or lowering the wheel structure and also for adjusting thesame at any desired height.

A further object of the invention is to produce a simple and inexpensivedevice and yet one which will be exceedingly effective for the purposesfor which it is designed.

These objects I accomplish by means of such structure and relativearrangements of the parts as will fully appear by a perusal of thefollowing specification and claims.

In the drawings similar characters of reference indicate correspondingparts in the several views.

Figure 1 is a side elevation of the complete device. Fig. 2 is a frontelevation of the same. Fig. 3 is a detached View of a wheel adjustingmeans. Fig. 4 is a sectional view taken on a line X-X of Fig. 3. Fig. 5is a detached view of a spring catch adjustment. Fig. 6 is a sideelevation of a spring catch.

Referring now more particularly to the characters of reference on thedrawings, 1 designates the bowl of the scraper proper which may be anyordinary type of drag scraper and is provided with the usual handle 2.

When it is desired to apply my improved structure I provide an auxiliaryhandle 3 having projecting arms 4, one adapted to project on each sideof the bowl 1 and each having an inward bend at its outer end and beingthereafter pivoted to the bowl 1 as at 8, by means of bolts or othersuitable securing means, by which the wheel structure may be easily andquickly attached or taken off of the bowl of the scraper.

he numeral 7 designates wheels having hubs 8 mounted on bushings 9,there being dust caps 10 screw mounted on each end of the bushings 9 anddisposed around the axles 9 to keep out the dust and dirt. The saidaxles 9 have upwardly projecting pins 11 provided with vertical key-ways12 adapted to receive blocks 13 having projecting flanges 1 1 fitting oneach side of the members 4 and being secured there by means of U-bclts16 projecting around the pins 11 and through a plate 15 where they aresecured by nuts 16*. By means of this structure the position of thewheels 7 with relation to the members 1 may be adjusted.

The member 3 is provided with a projecting bolt 17 in its side mountedon which is a plate 18 having a catch 19 adapted to engage the undersideof the member 2, there being a spring 20 interposed between the head ofthe bolt 17 and said plate 18 which holds said catch 19 in engagementwith the member 2. A bell crank 21 is fulcrumed to the underside of themember 3 and normally engages the member 18 and is provided with a rod22 leading to an operating handle 23. The operation of the handle 23pulls on the bell crank 21 to cause it to move against the plate 18which disengages the hook 19 from the member 2. This action then permitsthe member 3 and incidentally the members 1 to be moved on the pivotalpoints 6 which permits the wheels 7 to be raised away from supportingthe bowl 1 whereupon the said bowl can be used to scrape itself full ofdirt and then when the bowl is full of dirt the handle 3 may be broughtback into position so as to cause the catch 19 to engage the member 2which again brings the wheels 7 into supporting position and holds themthere whereupon the scraper may be readily conveyed to any pointdesired.

As an auxiliary support I provide a wheel 24 having two supportingplates 25 disposed on each side of the members 2 and 3 and secured tothe member 2 by means of a U-bolt 26 having nuts 26 by means of whichthey can be adjusted at any point desired.

In practice the wheels 7 should be adjusted along the arms 4 so thatmost of the load will be on such wheels, the scraper tilting back on thehind wheels 24 only enough to keep it from tilting forward and dumpmg.

From the foregoing description it will be readily seen that I haveproduced such a device as substantially fulfils the objects of theinvention as set forth herein.

-lVhile this specification sets forth in detail the present andpreferred construction of the device, still in practice such deviationsfrom such detail may be resorted to as do not form a departure from thespirit of the invention.

Having thus described my invention what- I claim as new and useful anddesire to secure by Letters Patent is 1. A device of the characterdescribed comprising the combination with a scraper bowl, of a handlemember having arms adapted to be connected with said scraper bowl,wheels having upwardly projecting pins, U-bolts adapted to secure saidpins to said arms, and means for adjusting said pins vertically in saidU-bolts, as described.

2. A device of the character described comprising the combination with ascraper bowl, of a handle member having arms adapted to be attached tosaid scraper bowl, wheels having pins provided with keyways, blocksmovable vertically in said keyways, projecting flanges on said blocksengaging Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

said arms and U-bolts joinin said arms, blocks and pins, as described.

8. A device of the character described comprising the combination with ascraper bowl having a handle, of an independent handle member providedwith arms adapted to be attached to said scraper bowl, wheels mounted onsaid arms, means for fastening independent handle member and adapted toengage said plate, an operating rod connected with said bell-crank, ahandle member pivoted on said independent handle member, said rodengaging said last named handle member, as described' 1 V 4. A device ofthe character described comprising a handle member having arms adaptedto be pivoted to a scraper bowl,

wheels having supporting means adjustable vertically in said arms andmeans for fixing said handle member stationary with respect to saidbowl, as described.

In testimony whereof I aflix my signature in presence of two witnesses.

SAMUEL BLODGETT.

Witnesses STEPHEN N. BLEWETT, CLARENCE SMITH.

Washington, D. G.

